CVE-2021-41087
Improperly Implemented path matching for in-toto-golang
Impact
### Impact Authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). ### Patches The problem has been fixed in version 0.3.0. ### Workarounds Exploiting this vulnerability is dependent on the specific policy applied. ### For more information If you have any questions or comments about this advisory: * Open an issue in [in-toto-golang](http://github.com/in-toto/in-toto-golang) * Email us at [in-toto-public](mailto:in-toto-public@googlegroups.com) * If this is a sensitive security-relevant disclosure, please send a PGP encrypted email to santiagotorres@purdue.edu or jcappos@nyu.edu
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/in-toto/in-toto-golang | <= 0.2.0 | 0.3.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| In-Toto | In-Toto-Golang | before 0.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc4290
- https://github.com/in-toto/in-toto-golang/security/advisories/GHSA-vrxp-mg9f-hwf3
- https://github.com/advisories/GHSA-vrxp-mg9f-hwf3
- https://nvd.nist.gov/vuln/detail/CVE-2021-41087